I’m new to Linux, using Kubuntu. I got Left 4 Dead 1 installed from Steam and I’m using Proton 8.0. I get an error saying “An error occurred while launching this game: invalid app configuration”. Is there a launch option I should be using? Something else?
Any particular reason why you are using Proton? I believe there’s a native version of it for Linux (or at least there used to be).
Left 4 Dead 2 has a native version, not the original Left 4 Dead.